I have just had to cull my beautiful Golden Wyandotte hen this evening after a full month of attempting to heal her. Not antibiotics, not worming, not warm baths, not probiotics, not seaweed vitamin supplements helped. She became our pet, because she no longer scratched she was given full access to the garden. She would happily sit as close as she could to the other hens on the other side of the wire and chip away at the grass. It has been over a month now and after some intial thoughts she might be trending upwards we had to accept she was in a slow decline. Through this who period she has continued to lay eggs every two days and with a few exceptions has had normal stools. Today her vent/intestines prolapsed so that a small soft shell was ejected along with 10 cm of innards. She looked miserable and we finally despatched her. I noticed this morning she was twitching her left leg upwards, as though to scratch her face, but she could not get it more than a few cm off the ground. I see in other blogs they talked off puffy abdomens filled with fluid that they used needle/syringes to extract with positive outcomes. I see blogs about Mareks viral infection - but she doesn't seem to fit neatly in there. I wish I knew how to have successfully treated the issue!!!!!! Thanks everyone for advice throughout - it was much appreciated.